创建一个接受整数数组的构造函数

Question

如何将整数数组传入我的构造函数？

这是我的代码：

import java.io.*;
import java.util.*;

public class Temperature implements Serializable
{
    private int[] temps = new int [7];
    public Temperature(int[] a)
    {
        for(int i=0; i < 7; i++)
        {
            temps[i] = a[i];
        }

    }
    public static void main(String[] args)
    {
        Temperature i = new Temperature(1,2,3,4,5,6,7);
    }
}

给出的错误是：

Temperature.java:17: error: constructor Temperature in class Temperature cannot be applied to given types;
        Temperature i = new Temperature(1,2,3,4,5,6,7);
                        ^
  required: int[]
  found: int,int,int,int,int,int,int
  reason: actual and formal argument lists differ in length
1 error

- bob t

Answer 1

• For the current invocation, you need a var-args constructor instead. So, you can either change your constructor declaration to take a var-arg argument: -

  public Temperature(int... a) {
       /**** Rest of the code remains the same ****/
  }
  

• or, if you want to use an array as argument, then you need to pass an array to your constructor like this -

  Temperature i = new Temperature(new int[] {1,2,3,4,5,6,7}); 
  

- Rohit Jain

Answer 2

您可以通过以下方式完成此操作。

import java.io.*;
import java.util.*;

public class Temperature implements Serializable
{
    private int[] temps = new int [7];
    public Temperature(int[] a)
    {
        for(int i=0; i < 7; i++)
        {
            temps[i] = a[i];
        }

    }
    public static void main(String[] args)
    {
        int [] vals = new int[]{1,2,3,4,5,6,7};  
        Temperature i = new Temperature(vals);
    }




}

- Bhavik Ambani

Answer 3

这应该可以解决问题：new Temperature(new int[] {1,2,3,4,5,6,7})

- Dan Iliescu

Answer 4

 public static void main(String[] args)
    {
    Temperature i = new Temperature(new int[] {1,2,3,4,5,6,7});
    }

- kosa

Answer 5

Temperature i = new Temperature(1,2,3,4,5,6,7);

当您尝试初始化此构造函数时，请考虑它具有int值，如果出现以下错误消息：

required: int[] found: int,int,int,int,int,int,int reason: actual and formal argument lists differ in length 在初始化值之前，请将其声明为单独的变量。

 import java.io.*;
import java.util.*;

public class HashPrint implements Serializable
{
    private int[] temps = new int [7];
    public HashPrint(int[] a)
    {
        this.temps=a;

    }
    public static void main(String[] args)
    {
        int arr[]={1,2,3,4,5,6,7};

        HashPrint i = new HashPrint(arr);
    }
}

- Baba Fakruddin